Glamorgan had only reached 61 for one at the halfway stage but Goodwin, who was promoted up the order, gave the innings some impetus by hitting Ryder for a six baseball style back over the bowler's head.

Goodwin then reverse-swept spinner Tim Phillips for four, which brought up the 100, before hitting the off-spinner over midwicket for six.

The former Sussex man continued to accelerate the Glamorgan score when striking Bopara for three consecutive fours, while Rudolph, who dropped anchor, reached his fifty off 45 balls.

Goodwin followed Rudolph with his half-century coming from 29 deliveries and struck a straight six from the penultimate ball before holing out off the final delivery of the innings.

But Goodwin and Rudolph's good work was undone as Essex made a flying start to their reply. Ryder did not hold back as he swept Michael Hogan for six and then struck Andrew Salter over long-on.

Ryder struck three consecutive fours off Hogan as 19 came from the fifth over.

Pettini was caught at mid-off off Allenby but it mattered little to Essex, who got to more than halfway to their total with 13.2 overs remaining.

Ryder holed out to Salter for 51, which came from only 28 balls with two sixes and six fours, yet Essex's strong batting line-up was always too good for their hosts.